Kuan - I'm in NY. It wasn't a conversion. I believe there was a factory option, which is turbo-look, i.e. whale tail and fender flares, but w/o the turbo engine. I haven't seen many of them, so I don't know if it was an American option.

I have pictures from the RUF factory, and the turbo-look was already there when RUF started their work. The added running boards (by RUF) are steel. I'm wondering if they were intended to stiffen the chassis, or maybe US had side impact requirements that the Euros didn't?

I'm starting on my learning curve now, but as forum member suggested, there are lots of knowledgeable people here, and I appreciate the help.

Keeping it is not an option. I can see my 11 year old pulling a Ferris Bueller in a few years, and I'm not going to keep the temptation available. We've got local country roads here with limited visibility, and if I couldn't keep from going too fast on them, he won't either.